Change NTPSnippetsService to implement ContentSuggestionsProvider

components/ntp_snippets/content_suggestions_service.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/ntp_snippets/content_suggestions_service.h"
 
 #include <algorithm>
 #include <iterator>
 
 #include "base/bind.h"
@@ skipping 43 matching lines @@
     const std::string& suggestion_id,
     const ImageFetchedCallback& callback) {
   if (!id_category_map_.count(suggestion_id)) {
     LOG(WARNING) << "Requested image for unknown suggestion " << suggestion_id;
     callback.Run(suggestion_id, gfx::Image());
     return;
   }
   ContentSuggestionsCategory category = id_category_map_[suggestion_id];
   if (!providers_.count(category)) {
     LOG(WARNING) << "Requested image for suggestion " << suggestion_id
-                 << " for unavailable category " << int(category);
+                 << " for unavailable category " << static_cast<int>(category);
     callback.Run(suggestion_id, gfx::Image());
     return;
   }
   providers_[category]->FetchSuggestionImage(suggestion_id, callback);
 }
 
 void ContentSuggestionsService::ClearCachedSuggestionsForDebugging() {
   suggestions_by_category_.clear();
   id_category_map_.clear();
   for (auto& category_provider_pair : providers_) {
@@ skipping 10 matching lines @@
 
 void ContentSuggestionsService::DiscardSuggestion(
     const std::string& suggestion_id) {
   if (!id_category_map_.count(suggestion_id)) {
     LOG(WARNING) << "Discarded unknown suggestion " << suggestion_id;
     return;
   }
   ContentSuggestionsCategory category = id_category_map_[suggestion_id];
   if (!providers_.count(category)) {
     LOG(WARNING) << "Discarded suggestion " << suggestion_id
-                 << " for unavailable category " << int(category);
+                 << " for unavailable category " << static_cast<int>(category);
     return;
   }
   providers_[category]->DiscardSuggestion(suggestion_id);
 
   // Remove the suggestion locally.
   id_category_map_.erase(suggestion_id);
   std::vector<ContentSuggestion>* suggestions =
       &suggestions_by_category_[category];
   auto position =
       std::find_if(suggestions->begin(), suggestions->end(),
@@ skipping 92 matching lines @@
 }
 
 void ContentSuggestionsService::NotifyCategoryStatusChanged(
     ContentSuggestionsCategory category) {
   FOR_EACH_OBSERVER(
       Observer, observers_,
       OnCategoryStatusChanged(category, GetCategoryStatus(category)));
 }
 
 }  // namespace ntp_snippets